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Prototype of named machines for vsphere
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| /* | ||
| Copyright 2018 The Kubernetes Authors. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
||
| package namedmachines | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "io" | ||
| "io/ioutil" | ||
| "os" | ||
|
|
||
| "github.com/ghodss/yaml" | ||
| ) | ||
|
|
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| // Config Watch holds the path to the named machines yaml file. | ||
| // This is used during bootstrap when the apiserver does not yet exist. | ||
| type ConfigWatch struct { | ||
| path string | ||
| } | ||
|
|
||
| // A single named machine. | ||
| type NamedMachine struct { | ||
| MachineName string | ||
| MachineHcl string | ||
| } | ||
|
|
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| // A list of named machines. | ||
| type NamedMachinesItems struct { | ||
| Items []NamedMachine `json:"items"` | ||
| } | ||
|
|
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| // All named machines defined in yaml. | ||
| type NamedMachines struct { | ||
| namedMachinesItems *NamedMachinesItems | ||
| } | ||
|
|
||
| func NewConfigWatch(path string) (*ConfigWatch, error) { | ||
| if _, err := os.Stat(path); err != nil { | ||
| return nil, err | ||
| } | ||
| return &ConfigWatch{path: path}, nil | ||
| } | ||
|
|
||
| // Returns all named machines for ConfigWatch. | ||
| func (cw *ConfigWatch) NamedMachines() (*NamedMachines, error) { | ||
| file, err := os.Open(cw.path) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return parseNamedMachinesYaml(file) | ||
| } | ||
|
|
||
| func parseNamedMachinesYaml(reader io.Reader) (*NamedMachines, error) { | ||
| bytes, err := ioutil.ReadAll(reader) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| items := &NamedMachinesItems{} | ||
| err = yaml.Unmarshal(bytes, items) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| return &NamedMachines{items}, nil | ||
| } | ||
|
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| func (nm *NamedMachines) GetYaml() (string, error) { | ||
| bytes, err := yaml.Marshal(nm.namedMachinesItems) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| return string(bytes), nil | ||
| } | ||
|
|
||
| // Returns a NamedMachine that matches the passed name. | ||
| func (nm *NamedMachines) MatchMachine(machineName string) (*NamedMachine, error) { | ||
| for _, namedMachine := range nm.namedMachinesItems.Items { | ||
| if namedMachine.MachineName == machineName { | ||
| return &namedMachine, nil | ||
| } | ||
| } | ||
| return nil, fmt.Errorf("could not find a machine with name %s", machineName) | ||
| } |
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